diff -r 18863bf3501f -r e0b8b019d2f5 src/java.base/share/classes/java/time/chrono/ChronoLocalDateImpl.java
--- a/src/java.base/share/classes/java/time/chrono/ChronoLocalDateImpl.java	Thu Aug 29 18:52:30 2019 -0400
+++ b/src/java.base/share/classes/java/time/chrono/ChronoLocalDateImpl.java	Thu Aug 29 16:31:34 2019 -0700
@@ -146,6 +146,7 @@
     /**
      * Serialization version.
      */
+    @java.io.Serial
     private static final long serialVersionUID = 6282433883239719096L;
 
     /**